/* 全局样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Helvetica, Segoe UI, Arial, Roboto, 'PingFang SC', 'miui', 'Hiragino Sans GB', 'Microsoft Yahei', sans-serif;
  background-color: #f8f8f8;
  color: #333;
  line-height: 1.5;
}

/* 移动端适配 */
html {
  font-size: 14px;
}

/* 清除iOS默认样式 */
input, button {
  -webkit-appearance: none;
  outline: none;
  border: none;
}

/* 清除tap高亮 */
* {
  -webkit-tap-highlight-color: transparent;
}

/* 防止用户选择文本 */
body {
  -webkit-user-select: none;
  user-select: none;
}

/* 允许输入框选择文本 */
input, textarea {
  -webkit-user-select: auto;
  user-select: auto;
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 0;
  background: transparent;
}

/* 安全区域适配 */
.safe-area-inset-top {
  padding-top: constant(safe-area-inset-top);
  padding-top: env(safe-area-inset-top);
}

.safe-area-inset-bottom {
  padding-bottom: constant(safe-area-inset-bottom);
  padding-bottom: env(safe-area-inset-bottom);
}

/* 通用工具类 */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

/* 单行文本省略 */
.ellipsis {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 多行文本省略 */
.ellipsis-2 {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

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