/* 夜间模式的CSS变量 */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e0e0e0;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --border-color: #dddddd;
    --card-bg: #ffffff;
    --nav-bg: #2c3e50;
    --link-color: #3498db;
    --button-primary: #2ecc71;
    --button-hover: #64bb87;
    --price-color: #e74c3c;
    --tag-bg: #e9ecef;
    --tag-text: #495057;
    --card-selected: #b7ffc3;
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-tertiary: #999999;
    --border-color: #404040;
    --card-bg: #333333;
    --nav-bg: #000000;
    --link-color: #5dade2;
    --button-primary: #27ae60;
    --button-hover: #00702f;
    --price-color: #ff6b6b;
    --tag-bg: #2d2d2d;
    --tag-text: #adb5bd;
    --card-selected: #334937;
}