/* Edge 浏览器 Select 下拉选择黑色背景修复 */
/* Edge Browser Select Dropdown Black Background Fix */

/*
 * 问题描述：Windows Edge浏览器中HTML select元素的option在下拉时显示黑色背景
 * 根本原因：Edge使用系统原生样式，与Chrome渲染机制不同
 * 解决方案：多层次CSS覆盖，确保跨浏览器兼容性
 */

/* ================================
   方案1: Edge特定样式覆盖
   ================================ */

/* Edge浏览器检测与样式覆盖 */
@supports (-ms-ime-align: auto) {
    /* 针对Edge的select元素样式 */
    select {
        -webkit-appearance: none !important;
        -moz-appearance: none !important;
        -ms-appearance: none !important;
        appearance: none !important;
        background-color: #ffffff !important;
        color: #000000 !important;
        border: 1px solid #d1d5db !important;
    }
    
    /* 针对Edge的option元素样式 */
    select option {
        background-color: #ffffff !important;
        color: #000000 !important;
        padding: 8px 12px !important;
    }
    
    /* 深色模式下的Edge修复 */
    .dark select {
        background-color: #374151 !important;
        color: #f9fafb !important;
        border-color: #4b5563 !important;
    }
    
    .dark select option {
        background-color: #374151 !important;
        color: #f9fafb !important;
    }
}

/* ================================
   方案2: 通用select样式强化
   ================================ */

/* 所有select元素的基础样式覆盖 */
select {
    /* 移除浏览器默认外观 */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    
    /* 确保背景色显示 */
    background-color: #ffffff;
    background-image: none;
    color: #1f2937;
    
    /* 边框和圆角 */
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    
    /* 内边距 */
    padding: 0.5rem 0.75rem;
    padding-right: 2.5rem; /* 为自定义箭头留空间 */
    
    /* 字体设置 */
    font-size: 0.875rem;
    line-height: 1.25rem;
    
    /* 过渡效果 */
    transition: all 0.15s ease-in-out;
}

/* select焦点状态 */
select:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 自定义下拉箭头 */
select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
}

/* ================================
   方案3: Option元素专项修复
   ================================ */

/* option元素样式 */
select option {
    background-color: #ffffff;
    color: #1f2937;
    padding: 8px 12px;
    
    /* 字体继承 */
    font-family: inherit;
    font-size: inherit;
    
    /* 防止文字截断 */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* option悬停状态 */
select option:hover {
    background-color: #f3f4f6;
}

/* option选中状态 */
select option:checked {
    background-color: #3b82f6;
    color: #ffffff;
}

/* ================================
   方案4: 深色模式兼容
   ================================ */

/* 深色模式下的select样式 */
.dark select {
    background-color: #374151;
    color: #f9fafb;
    border-color: #4b5563;
    
    /* 深色模式下的箭头 */
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%9ca3af' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
}

.dark select:focus {
    border-color: #60a5fa;
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.1);
}

/* 深色模式下的option */
.dark select option {
    background-color: #374151;
    color: #f9fafb;
}

.dark select option:hover {
    background-color: #4b5563;
}

.dark select option:checked {
    background-color: #3b82f6;
    color: #ffffff;
}

/* ================================
   方案5: 时间分段表格中的特定修复
   ================================ */

/* 针对时间分段配置表格中的交易模式选择器 */
.segment-config-table select,
table select {
    /* 确保表格内select显示正常 */
    min-width: 120px;
    max-width: 200px;
    
    /* 防止表格单元格挤压 */
    flex-shrink: 0;
}

/* 交易模式选择器特定样式 */
select[v-model="segment.mode"] {
    background-color: #ffffff !important;
    color: #000000 !important;
}

.dark select[v-model="segment.mode"] {
    background-color: #374151 !important;
    color: #f9fafb !important;
}

/* ================================
   方案6: Edge版本特定修复
   ================================ */

/* Edge Legacy (EdgeHTML) 修复 */
@supports (-ms-accelerator: true) {
    select {
        background-color: #ffffff !important;
    }
    
    select option {
        background-color: #ffffff !important;
        color: #000000 !important;
    }
}

/* Edge Chromium 修复 */
@media screen and (-webkit-min-device-pixel-ratio: 0) {
    _::-webkit-full-page-media, _:future, :root select {
        background-color: #ffffff !important;
    }
    
    _::-webkit-full-page-media, _:future, :root select option {
        background-color: #ffffff !important;
        color: #000000 !important;
    }
}

/* ================================
   方案7: JavaScript备用方案标记
   ================================ */

/* 为JavaScript检测添加CSS类 */
.edge-browser select {
    background-color: #ffffff !important;
    color: #000000 !important;
}

.edge-browser select option {
    background-color: #ffffff !important;
    color: #000000 !important;
}

.edge-browser.dark select {
    background-color: #374151 !important;
    color: #f9fafb !important;
}

.edge-browser.dark select option {
    background-color: #374151 !important;
    color: #f9fafb !important;
}

/* ================================
   调试辅助样式 (开发时使用)
   ================================ */

/* 开发调试：显示浏览器类型 */
/*
select::before {
    content: "Edge Fix Applied";
    position: absolute;
    top: -20px;
    left: 0;
    font-size: 10px;
    color: #ff0000;
    pointer-events: none;
    z-index: 1000;
}
*/

/* ================================
   方案8: 稳定类名选择器（2024标准最佳实践）
   ================================ */

/* 基础交易模式选择器样式 */
.trade-mode-select {
    /* 让 UA 以浅色方案渲染控件，减少暗色强制介入 */
    color-scheme: light;

    /* 明确背景与前景，避免与宿主深色样式冲突 */
    background-color: #ffffff;
    color: #111827; /* slate-900 */
    border-color: #cbd5e1; /* slate-300 */

    /* 保持原生外观，避免去皮后兼容差异 */
    appearance: auto;
    background-image: none;
}

/* option 元素样式（多数 UA 对原生面板不完全可控，此为尽力而为） */
.trade-mode-select option {
    background-color: #ffffff;
    color: #111827;
    padding: 8px 12px;
}

/* 交互状态增强 */
.trade-mode-select:hover {
    border-color: #94a3b8; /* slate-400 */
}

.trade-mode-select:focus {
    outline: 2px solid transparent;
    border-color: #3b82f6; /* blue-500 */
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 深色模式适配 */
.dark .trade-mode-select {
    color-scheme: dark;
    background-color: #374151; /* slate-700 */
    color: #e5e7eb; /* slate-200 */
    border-color: #475569; /* slate-600 */
}

.dark .trade-mode-select option {
    background-color: #374151;
    color: #e5e7eb;
}

/* Windows 高对比度/强制颜色模式处理 */
@media (forced-colors: active) {
    .trade-mode-select {
        forced-color-adjust: none;
        background-color: Canvas;
        color: CanvasText;
        border-color: ButtonBorder;
    }

    .trade-mode-select option {
        background-color: Canvas;
        color: CanvasText;
    }
}

/* 禁用状态样式 */
.trade-mode-select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background-color: #f1f5f9; /* slate-100 */
    color: #64748b; /* slate-500 */
}

.dark .trade-mode-select:disabled {
    background-color: #1e293b; /* slate-800 */
    color: #475569; /* slate-600 */
}