uni-picker {
  position: relative;
  display: block;
  cursor: pointer;
}

uni-picker[hidden] {
  display: none;
}

uni-picker[disabled] {
  cursor: not-allowed;
}

.uni-picker-container {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  box-sizing: border-box;
  z-index: 999;
  font-size: 16px;
}

.uni-picker-container .uni-picker-custom * {
  box-sizing: border-box;
}

.uni-picker-container .uni-picker-custom {
  position: fixed;
  left: 0;
  bottom: 0;
  transform: translate(0, 100%);
  backface-visibility: hidden;
  z-index: 999;
  width: 100%;
  background-color: #fff;
  visibility: hidden;
  transition: transform 0.3s, visibility 0.3s;
}

.uni-picker-container .uni-picker-custom.uni-picker-toggle {
  visibility: visible;
  transform: translate(0, 0);
}

.uni-picker-container .uni-picker-content {
  position: relative;
  display: block;
  width: 100%;
  height: 238px;
  background-color: white;
}

.uni-picker-container .uni-picker-item {
  padding: 0;
  height: 34px;
  line-height: 34px;
  text-align: center;
  color: #000;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  cursor: pointer;
}

.uni-picker-container .uni-picker-header {
  display: block;
  position: relative;
  text-align: center;
  width: 100%;
  height: 45px;
}

.uni-picker-container .uni-picker-header:after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  height: 1px;
  clear: both;
  border-bottom: 1px solid #e5e5e5;
  color: #e5e5e5;
  transform-origin: 0 100%;
  transform: scaleY(0.5);
}

.uni-picker-container .uni-picker-action {
  display: block;
  max-width: 50%;
  top: 0;
  height: 100%;
  box-sizing: border-box;
  padding: 0 14px;
  font-size: 17px;
  line-height: 45px;
  overflow: hidden;
  cursor: pointer;
}

.uni-picker-container .uni-picker-action.uni-picker-action-cancel {
  float: left;
  color: #888;
}

.uni-picker-container .uni-picker-action.uni-picker-action-confirm {
  float: right;
  color: #007aff;
}

.uni-picker-container .uni-picker-select {
  display: none;
}

.uni-picker-system {
  position: absolute;
  display: none;
  display: block;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.uni-picker-system > .uni-picker-system_input {
  position: absolute;
  border: none;
  height: 100%;
  opacity: 0;
  /* Chrome 无效 */
  cursor: pointer;
}

.uni-picker-system > .uni-picker-system_input.firefox {
  top: 0;
  left: 0;
  width: 100%;
}

.uni-picker-system > .uni-picker-system_input.chrome {
  /* 日历空白位置宽度 32px */
  top: 0;
  left: 0;
  width: 2em;
  font-size: 32px;
  height: 32px;
}

@media screen and (min-width: 500px) and (min-height: 500px) {
  .uni-mask.uni-picker-mask {
    background: none;
  }
  .uni-picker-container .uni-picker-custom {
    width: 300px;
    left: 50%;
    right: auto;
    top: 50%;
    bottom: auto;
    transform: translate(-50%, -50%);
    opacity: 0;
    border-radius: 5px;
    transition: opacity 0.3s, visibility 0.3s;
    box-shadow: 0px 0 20px 5px rgba(0, 0, 0, 0.3);
  }
  .uni-picker-container .uni-picker-header {
    border-radius: 5px 5px 0 0;
  }
  .uni-picker-container .uni-picker-content {
    /* transform 用于解决 Safari overflow 失效的问题 */
    transform: translate(0 0);
    overflow: hidden;
    border-radius: 0 0 5px 5px;
  }
  .uni-picker-container .uni-picker-custom.uni-picker-toggle {
    opacity: 1;
    transform: translate(-50%, -50%);
  }
  .uni-selector-select .uni-picker-header,
  .uni-selector-select .uni-picker-content {
    display: none;
  }
  .uni-selector-select .uni-picker-select {
    display: block;
    max-height: 300px;
    overflow: auto;
    background-color: white;
    border-radius: 5px;
    padding: 6px 0;
  }
  .uni-selector-select .uni-picker-item {
    padding: 0 10px;
    color: #555555;
  }
  .uni-selector-select .uni-picker-item:hover {
    background-color: #f6f6f6;
  }
  .uni-selector-select .uni-picker-item.selected {
    color: #007aff;
  }
}

@media (prefers-color-scheme: dark) {
  .uni-picker-container .uni-picker-content {
    background-color: var(--UI-BG-2);
  }
  .uni-selector-select .uni-picker-item,
  .uni-picker-container .uni-picker-item,
  .uni-picker-container .uni-picker-action.uni-picker-action-cancel {
    color: var(--UI-FG-0);
  }
  .uni-picker-container .uni-picker-custom {
    background-color: var(--UI-BG-2);
  }
  .uni-picker-container .uni-picker-header:after {
    border-bottom-color: var(--UI-FG-3);
  }
}