/**
 * 语言切换器样式
 */

.lang-switcher {
    position: relative;
    display: inline-block;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    color: inherit;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.lang-btn .lang-flag {
    font-size: 16px;
}

.lang-btn .lang-name {
    max-width: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lang-btn i {
    font-size: 10px;
    transition: transform 0.2s;
}

.lang-dropdown.show + .lang-btn i,
.lang-switcher:focus-within .lang-btn i {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    min-width: 140px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s;
    z-index: 1000;
    overflow: hidden;
}

.lang-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    cursor: pointer;
    color: #333;
    font-size: 13px;
    transition: background 0.15s;
}

.lang-option:hover {
    background: #f5f5f5;
}

.lang-option.active {
    background: #f0f5ff;
    color: #667eea;
}

.lang-option .lang-flag {
    font-size: 18px;
}

.lang-option .fa-check {
    margin-left: auto;
    font-size: 12px;
    color: #667eea;
}

/* 深色主题适配 */
.dark-theme .lang-dropdown {
    background: #2d2d2d;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.dark-theme .lang-option {
    color: #eee;
}

.dark-theme .lang-option:hover {
    background: #3d3d3d;
}

.dark-theme .lang-option.active {
    background: #3d4a6b;
}

/* 导航栏内的语言切换器 */
.navbar .lang-switcher {
    margin-left: 10px;
}

.navbar .lang-btn {
    color: #fff;
}

/* 登录页的语言切换器 - 放在登录卡片上方 */
.login-lang-switcher {
    position: relative;
    margin-bottom: 15px;
}

.login-lang-switcher .lang-btn {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
}

.login-lang-switcher .lang-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
}