/**
 * AI-Trans 悬浮语言切换器样式（新版）
 *
 * 特点：
 * - 圆角卡片式菜单
 * - 国旗 + 语言名称
 * - 当前语言蓝色高亮 + ✓
 * - 平滑动画效果
 */

/* ========== 悬浮切换器容器 ========== */
.aitrans-floating-switcher {
    position: fixed;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 确保菜单能正确定位 */
.aitrans-floating-switcher .aitrans-switcher-menu {
    position: absolute;
}

/* ========== 收起状态的按钮 ========== */
.aitrans-switcher-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-width: 70px;
    height: 40px;
    background: linear-gradient(135deg, #007AFF 0%, #0051D5 100%);
    color: #FFFFFF;
    border: none;
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
}

.aitrans-switcher-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 122, 255, 0.4);
}

.aitrans-switcher-btn:active {
    transform: translateY(0);
}

.aitrans-switcher-btn .aitrans-globe {
    font-size: 16px;
    line-height: 1;
}

.aitrans-switcher-btn .aitrans-current {
    font-size: 13px;
}

/* ========== 展开状态的菜单容器 ========== */
.aitrans-switcher-menu {
    position: absolute;
    bottom: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: #FFFFFF;
    border: 1px solid #E8E8E8;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    z-index: 10;
}

.aitrans-switcher-menu.aitrans-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ========== 菜单头部 ========== */
.aitrans-switcher-menu-header {
    padding: 14px 16px;
    border-bottom: 1px solid #E8E8E8;
}

.aitrans-switcher-menu-title {
    font-size: 14px;
    font-weight: 600;
    color: #333333;
    text-align: center;
}

/* ========== 语言列表 ========== */
.aitrans-switcher-menu-list {
    list-style: none;
    margin: 0;
    padding: 8px;
    max-height: 280px;
    overflow-y: auto;
}

/* 自定义滚动条 */
.aitrans-switcher-menu-list::-webkit-scrollbar {
    width: 4px;
}

.aitrans-switcher-menu-list::-webkit-scrollbar-thumb {
    background: #CCCCCC;
    border-radius: 2px;
}

.aitrans-switcher-menu-list::-webkit-scrollbar-track {
    background: transparent;
}

/* ========== 语言选项 ========== */
.aitrans-switcher-lang-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    margin: 2px 0;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    color: inherit;
}

.aitrans-switcher-lang-item:hover {
    background: #F5F5F5;
}

.aitrans-switcher-lang-item.aitrans-active {
    background: #E8F4FD;
}

/* 国旗emoji */
.aitrans-switcher-lang-flag {
    font-size: 20px;
    line-height: 1;
    flex-shrink: 0;
    min-width: 24px;
}

/* 语言名称 */
.aitrans-switcher-lang-name {
    flex: 1;
    font-size: 13px;
    color: #333333;
}

/* 选中标记 */
.aitrans-switcher-lang-check {
    font-size: 14px;
    color: #007AFF;
    opacity: 0;
    transform: scale(0.5);
    transition: all 0.2s ease;
}

.aitrans-switcher-lang-item.aitrans-active .aitrans-switcher-lang-check {
    opacity: 1;
    transform: scale(1);
}

/* ========== 位置样式 ========== */

/* 右下角（默认） - 菜单向上展开 */
.aitrans-floating-switcher.bottom-right {
    bottom: 20px;
    right: 20px;
}

/* 左下角 - 菜单向上展开 */
.aitrans-floating-switcher.bottom-left {
    bottom: 20px;
    left: 20px;
}

.aitrans-floating-switcher.bottom-left .aitrans-switcher-menu {
    left: 0;
    right: auto;
}

/* 右上角 - 菜单向下展开 */
.aitrans-floating-switcher.top-right {
    top: 20px;
    right: 20px;
}

.aitrans-floating-switcher.top-right .aitrans-switcher-menu {
    bottom: auto;
    top: calc(100% + 8px);
}

/* 左上角 - 菜单向下展开 */
.aitrans-floating-switcher.top-left {
    top: 20px;
    left: 20px;
}

.aitrans-floating-switcher.top-left .aitrans-switcher-menu {
    bottom: auto;
    top: calc(100% + 8px);
    left: 0;
    right: auto;
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .aitrans-switcher-btn {
        min-width: 60px;
        height: 36px;
        font-size: 12px;
    }

    .aitrans-switcher-btn .aitrans-globe {
        font-size: 14px;
    }

    .aitrans-switcher-btn .aitrans-current {
        font-size: 12px;
    }

    .aitrans-switcher-menu {
        min-width: 180px;
    }

    .aitrans-switcher-lang-item {
        padding: 10px 10px;
    }

    .aitrans-switcher-lang-name {
        font-size: 12px;
    }
}

/* ========== 深色模式支持 ========== */
@media (prefers-color-scheme: dark) {
    .aitrans-switcher-menu {
        background: #1C1C1E;
        border-color: #3A3A3C;
    }

    .aitrans-switcher-menu-title {
        color: #FFFFFF;
    }

    .aitrans-switcher-lang-item:hover {
        background: #2C2C2E;
    }

    .aitrans-switcher-lang-item.aitrans-active {
        background: #1C4B7E;
    }

    .aitrans-switcher-lang-name {
        color: #FFFFFF;
    }
}

/* ========== 脉冲动画（首次使用提示） ========== */
@keyframes switcher-pulse {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(0, 122, 255, 0.5), 0 0 0 6px rgba(0, 122, 255, 0.1);
    }
}

.aitrans-switcher-btn.aitrans-pulse {
    animation: switcher-pulse 2s ease-in-out infinite;
}

/* ========== 向上/向下箭头指示器 ========== */
.aitrans-switcher-arrow {
    font-size: 10px;
    margin-left: 4px;
    transition: transform 0.3s ease;
}

.aitrans-switcher-menu.aitrans-open ~ .aitrans-switcher-btn .aitrans-switcher-arrow {
    transform: rotate(180deg);
}

/* ========== 下拉选择器样式（保留兼容） ========== */
.aitrans-floating-switcher select {
    display: none; /* 隐藏原生select，使用自定义样式 */
}

/* 禁用状态 */
.aitrans-switcher-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.aitrans-switcher-btn:disabled:hover {
    transform: none;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}