/**
 * Button 组件样式 - 100% 一比一复刻 MUI
 * 对应 MUI: packages/mui-material/src/Button/Button.js
 */

/* =============================================
   Root 基础样式
   ============================================= */
.MuiButton-root {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  position: relative;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  background-color: transparent;
  outline: 0;
  border: 0;
  margin: 0;
  cursor: pointer;
  user-select: none;
  vertical-align: middle;
  text-decoration: none;
  font-family: "Roboto", "Helvetica", "Arial", sans-serif;
  font-weight: 500;
  font-size: 0.875rem;
  line-height: 1.75;
  letter-spacing: 0.02857em;
  text-transform: uppercase;
  min-width: 64px;
  padding: 6px 16px;
  border-radius: 4px;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1) 0ms,
              box-shadow 250ms cubic-bezier(0.4, 0, 0.2, 1) 0ms,
              border-color 250ms cubic-bezier(0.4, 0, 0.2, 1) 0ms,
              color 250ms cubic-bezier(0.4, 0, 0.2, 1) 0ms;
}

/* =============================================
   变体 - Text
   ============================================= */
.MuiButton-text {
  padding: 6px 8px;
  background-color: transparent;
}

.MuiButton-textPrimary {
  color: #1976d2;
}

.MuiButton-textSecondary {
  color: #9c27b0;
}

.MuiButton-textSuccess {
  color: #2e7d32;
}

.MuiButton-textError {
  color: #d32f2f;
}

.MuiButton-textInfo {
  color: #0288d1;
}

.MuiButton-textWarning {
  color: #ed6c02;
}

.MuiButton-textInherit {
  color: inherit;
}

/* Text Size 变体 */
.MuiButton-textSizeSmall {
  padding: 4px 5px;
  font-size: 0.8125rem;
}

.MuiButton-textSizeLarge {
  padding: 8px 11px;
  font-size: 0.9375rem;
}

/* =============================================
   变体 - Outlined
   ============================================= */
.MuiButton-outlined {
  padding: 5px 15px;
  border: 1px solid currentColor;
  background-color: transparent;
}

.MuiButton-outlinedPrimary {
  color: #1976d2;
  border-color: rgba(25, 118, 210, 0.5);
}

.MuiButton-outlinedSecondary {
  color: #9c27b0;
  border-color: rgba(156, 39, 176, 0.5);
}

.MuiButton-outlinedSuccess {
  color: #2e7d32;
  border-color: rgba(46, 125, 50, 0.5);
}

.MuiButton-outlinedError {
  color: #d32f2f;
  border-color: rgba(211, 47, 47, 0.5);
}

.MuiButton-outlinedInfo {
  color: #0288d1;
  border-color: rgba(2, 136, 209, 0.5);
}

.MuiButton-outlinedWarning {
  color: #ed6c02;
  border-color: rgba(237, 108, 2, 0.5);
}

.MuiButton-outlinedInherit {
  color: inherit;
  border-color: currentColor;
}

/* Outlined Size 变体 */
.MuiButton-outlinedSizeSmall {
  padding: 3px 9px;
  font-size: 0.8125rem;
}

.MuiButton-outlinedSizeLarge {
  padding: 7px 21px;
  font-size: 0.9375rem;
}

/* =============================================
   变体 - Contained
   ============================================= */
.MuiButton-contained {
  color: #fff;
  box-shadow: 0px 3px 1px -2px rgba(0,0,0,0.2),
              0px 2px 2px 0px rgba(0,0,0,0.14),
              0px 1px 5px 0px rgba(0,0,0,0.12);
}

.MuiButton-containedPrimary {
  background-color: #1976d2;
  color: #fff;
}

.MuiButton-containedSecondary {
  background-color: #9c27b0;
  color: #fff;
}

.MuiButton-containedSuccess {
  background-color: #2e7d32;
  color: #fff;
}

.MuiButton-containedError {
  background-color: #d32f2f;
  color: #fff;
}

.MuiButton-containedInfo {
  background-color: #0288d1;
  color: #fff;
}

.MuiButton-containedWarning {
  background-color: #ed6c02;
  color: #fff;
}

.MuiButton-containedInherit {
  background-color: #e0e0e0;
  color: rgba(0, 0, 0, 0.87);
}

/* Contained Size 变体 */
.MuiButton-containedSizeSmall {
  padding: 4px 10px;
  font-size: 0.8125rem;
}

.MuiButton-containedSizeLarge {
  padding: 8px 22px;
  font-size: 0.9375rem;
}

/* =============================================
   尺寸
   ============================================= */
.MuiButton-sizeSmall {
  font-size: 0.8125rem;
}

.MuiButton-sizeMedium {
  font-size: 0.875rem;
}

.MuiButton-sizeLarge {
  font-size: 0.9375rem;
}

/* =============================================
   状态
   ============================================= */
.MuiButton-root.Mui-disabled {
  color: rgba(0, 0, 0, 0.26);
  pointer-events: none;
  cursor: default;
}

.MuiButton-contained.Mui-disabled {
  color: rgba(0, 0, 0, 0.26);
  box-shadow: none;
  background-color: rgba(0, 0, 0, 0.12);
}

.MuiButton-outlined.Mui-disabled {
  border: 1px solid rgba(0, 0, 0, 0.12);
}

.MuiButton-disableElevation {
  box-shadow: none;
}

.MuiButton-fullWidth {
  width: 100%;
}

/* =============================================
   图标
   ============================================= */
.MuiButton-startIcon {
  display: inherit;
  margin-right: 8px;
  margin-left: -4px;
}

.MuiButton-endIcon {
  display: inherit;
  margin-left: 8px;
  margin-right: -4px;
}

.MuiButton-iconSizeSmall {
  margin-left: -2px;
}

.MuiButton-iconSizeSmall > view,
.MuiButton-iconSizeSmall > text {
  font-size: 18px;
}

.MuiButton-iconSizeMedium > view,
.MuiButton-iconSizeMedium > text {
  font-size: 20px;
}

.MuiButton-iconSizeLarge > view,
.MuiButton-iconSizeLarge > text {
  font-size: 22px;
}

/* =============================================
   加载状态
   ============================================= */
.MuiButton-loading {
  pointer-events: none;
}

.MuiButton-loadingPositionCenter.MuiButton-loading {
  color: transparent;
}

.MuiButton-loadingIndicator {
  display: none;
  position: absolute;
  visibility: visible;
}

.MuiButton-loading .MuiButton-loadingIndicator {
  display: flex;
}

.MuiButton-loadingPositionStart .MuiButton-loadingIndicator {
  left: 14px;
}

.MuiButton-loadingPositionEnd .MuiButton-loadingIndicator {
  right: 14px;
}

.MuiButton-loadingPositionCenter .MuiButton-loadingIndicator {
  left: 50%;
  transform: translateX(-50%);
  color: rgba(0, 0, 0, 0.26);
}

/* 加载指示器旋转动画 */
.MuiCircularProgress-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: MuiCircularProgress-rotate 1s linear infinite;
}

@keyframes MuiCircularProgress-rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* =============================================
   Label
   ============================================= */
.MuiButton-label {
  width: 100%;
  display: inherit;
  align-items: inherit;
  justify-content: inherit;
}