/* CSS Reset - 现代化重置样式 */

/* 基础重置 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* HTML和Body设置 */
html {
    font-size: 16px; /* 基础字体大小 */
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-weight: 400;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* 标题重置 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

/* 链接重置 */
a {
    color: inherit;
    text-decoration: none;
}

/* 按钮重置 */
button {
    font-family: inherit;
    font-size: inherit;
    border: none;
    background: none;
    cursor: pointer;
    outline: none;
}

/* 输入框重置 */
input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: transparent;
}

/* 列表重置 */
ul, ol {
    list-style: none;
}

/* 图片重置 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 表格重置 */
table {
    border-collapse: collapse;
    border-spacing: 0;
}

/* 移除默认的focus样式，后续会添加自定义样式 */
:focus {
    outline: none;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* 选择文本样式 */
::selection {
    background-color: var(--primary-color);
    color: white;
}

/* 移动端触摸优化 */
* {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

/* 表单元素重置 */
input[type="search"] {
    -webkit-appearance: none;
    appearance: none;
}

input[type="search"]::-webkit-search-decoration,
input[type="search"]::-webkit-search-cancel-button {
    -webkit-appearance: none;
    appearance: none;
}

/* 按钮重置增强 */
button,
input[type="button"],
input[type="submit"],
input[type="reset"] {
    -webkit-appearance: none;
    appearance: none;
    border-radius: 0;
}

/* 禁用元素样式 */
[disabled] {
    cursor: not-allowed;
    opacity: 0.6;
}

/* 隐藏元素 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 清除浮动 */
.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

/* 文本截断 */
.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 多行文本截断 */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.text-truncate-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}